How we calculate your prices

We'll review your prices several times a year by checking them against other suppliers (using the Energy Retail Price Index) and adjusting them. This means your prices could go up or down, but never above the rates we quote you.

Here’s how we’ve calculated the split between your electricity daytime and night cost. We’ve used a split of 73% of the annual cost for daytime electricity use, 27% for night. For gas we've used our gas price: